Laboratory medicine: cardiac biomarkers: practice question

A Biochemistry question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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Biochemistry · Laboratory medicine: cardiac biomarkers

Sample item

Which cardiac biomarker is most specific and widely used for myocardial injury detection?

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

B. Cardiac troponin

Cardiac troponin is the preferred biomarker of myocardial injury because of high cardiac specificity and sensitivity. Values must be interpreted with symptoms, ECG, and rise-or-fall pattern.

Option by option

  • A. Alkaline phosphatase

    Alkaline phosphatase reflects hepatobiliary or bone activity.

  • B. Cardiac troponin (correct)

    Correct. Troponin is the main modern cardiac-injury biomarker.

  • C. Serum amylase

    Amylase is associated with pancreatic and salivary disease.

  • D. Creatine kinase only

    CK can rise with skeletal muscle injury and is less specific.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

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Questions about this Biochemistry question

What is the answer to this Biochemistry question?

The best answer is B, Cardiac troponin. Cardiac troponin is the preferred biomarker of myocardial injury because of high cardiac specificity and sensitivity.

Why is "Alkaline phosphatase" not the answer?

Alkaline phosphatase reflects hepatobiliary or bone activity.

Why is "Serum amylase" not the answer?

Amylase is associated with pancreatic and salivary disease.

Why is "Creatine kinase only" not the answer?

CK can rise with skeletal muscle injury and is less specific.

What concept does this question test?

It tests Laboratory medicine: cardiac biomarkers in Biochemistry. Values must be interpreted with symptoms, ECG, and rise-or-fall pattern.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Laboratory medicine: cardiac biomarkers?

Build one table of enzyme deficiency, disease, inheritance and key finding, then revise it by spaced recall. Then use the flashcards and the other Biochemistry questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.